[AZ-1132] Bump FluentValidation 12.0.0 to 12.1.1

Closes D-AZ795-1 production dependency carry-over.

Co-authored-by: Cursor <cursoragent@cursor.com>

_docs/05_security/dependency_scan_cycle15.md

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+# Dependency Scan (Cycle 15)
+
+**Date**: 2026-06-26
+**Mode**: Delta scan
+**Scope**: Cycle-15 delta — AZ-1132 (FluentValidation 12.0.0 → 12.1.1).
+**Method**: `dotnet list SatelliteProvider.sln package --vulnerable`.
+
+## Cycle-15 Package Manifest Diff
+
+| csproj | Cycle 13 baseline | Cycle 15 change |
+|--------|-------------------|-----------------|
+| `SatelliteProvider.Api` | FluentValidation 12.0.0, FluentValidation.DependencyInjectionExtensions 12.0.0 | **12.1.1** (both) |
+
+## Vulnerable Package Scan (2026-06-26)
+
+| Project | Finding | Severity | Notes |
+|---------|---------|----------|-------|
+| `SatelliteProvider.Api` | none | — | Production runtime — clean |
+| `SatelliteProvider.Common` | none | — | — |
+| `SatelliteProvider.IntegrationTests` | transitive JWT 7.0.3 | Moderate | GHSA-59j7-ghrg-fj52 — test-runtime only (pre-existing) |
+| `SatelliteProvider.TestSupport` | `System.IdentityModel.Tokens.Jwt` 7.0.3 | Moderate | test-runtime only — pre-existing |
+
+## Cycle-15 Findings
+
+**No new dependency CVEs.** Patch bump only.
+
+## Resolved carry-overs
+
+- **D-AZ795-1** (Low): FluentValidation 12.0.0 → 12.1.1 — **RESOLVED** (AZ-1132)
+
+## Remaining carry-overs
+
+- **D2-cy4** (Medium, test-runtime): JWT test packages — still open
+
+## Verdict
+
+**PASS** (cycle-15 delta) — D-AZ795-1 closed; zero new CVEs.
+
+Cumulative: **PASS_WITH_WARNINGS** — D2-cy4 only.